Routing Vias

[Alvaro Lopez]

Dear,

I have a question about routing and vias placement. "For example, if you have a 6 layers PCB, a microvia from layer 1 to layer 2, a buriedvia from layer 2 to layer 5 and I would like to get to layer 3. Is it necessary the small connection between vias on layer 2 (through a small track) ? Or is it possible to place those two vias (micro and buried) one next to the other in a vertical position all way down. In other words, what I'm saying is, place the micro via and under this the buried via, I noticed Altium allows me to get to layer 3 without a connection (track) between vias"
Sorry for the question I new in Altium. I hope you get me.
Thank you in advance.

[WhoKnewKnows]

Hi,

It's possible to stack via structures, but it's usually best to avoid doing this. The connection can be unreliable in rugged conditions.

[qdrives]

You should not put a micro via on top of a buried via (stacked). Not only is it unreliable in rugged conditions and WhoKnewKnows mentions, it can already fail during assembly.

[robertferanec]

You can consider to use also a through hole via for that connection
PS: I agree with WhoKnewKnows and qdrives